I understand the definition of the "Common Path" from Section 3.3.49 in NFPA 101, but within the examples it is up to the point when you reach a corridor and have the two exit alternatives.
In a case like the one in the image shown below, the orange area is very wide, or open space, up to where they would measure the common travel distance. At what point does the path of common travel stop in a scenario like this? What is that threshold?
6 Comments
Peter Howard
10/3/2024 06:51:13 am
From NFPA 101 (2024 edition)
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Glenn Berger
10/3/2024 08:30:01 am
In your illustration, the red dot would be the where the common path of travel would end. Actually to the left of the red dot.
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Todd E Wyatt
10/3/2024 08:47:59 am
As the others have stated, the Common Path of Travel (CPT) is to "two separate and distinct paths of travel of two Exits." While the diagram shows (3) stairways, they are not identified as "Exit Stairways". In order for these stairs to be considered "Exits", these stairways would need to meet the following definition :
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Todd E Wyatt
10/7/2024 08:40:21 am
The Common Path of Travel (CPT) is part of the initial Exit Access (EA) until there is "two separate and distinct paths of travel of two Exits."
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Dan Wilder
10/3/2024 08:57:57 am
Pete grabbed the annex section I've used in the past.
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Jim Safranek
10/3/2024 09:16:19 am
Technically, if both of the exits and their exit signs are readily visible from the shown position and there is nothing impeding a direct egress route to either exit from this shown position, the common path of travel (CPT per International Buiilding Code (IBC)) ends at the shown position. Effectively, the CPT distance is 0’ within a large, unobstructed room.
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